Because the Halo franchise is owned by Microsoft, not Bungie. And Bungie wanted to break away from Microsoft, who owned them, and so since Halo is such a big thing Microsoft made 343 to do everything halo, since halo belongs to Microsoft.
Halo Reach is the last Halo being made by Bungie. 343 Industries is taking over for them as they have the rights. They have announced the next game in the series, Halo 4.
There IS going to be a Halo 4, just not made by 343 Industries
Because they (Bungie/343 Industries) were working on other games. Like, Halo: Reach and Halo: ODST. They also gave the work over to 343 Industries to make it.
They are making halo 4 right now as we speak because Bungie had a contract with 343 industries but Bungie quit it and sold all their halo's to 343 Industries therefore 343 Industries now owns all the Halo's and their making the future Halo's
After halo reach there will no more halo games.
Ensemble Studios created Halo Wars under the direction of 343 Industries and Bungie.
343 Industries is making the next Halo because now that Bungie is done with Halo, they need another company to develop more Halo games.
No, Bungie did not make Halo 5. The game was developed by 343 Industries, which took over the Halo franchise after Bungie parted ways with it following Halo: Reach. Halo 5: Guardians was released in 2015 and continued the story of the Halo universe under 343 Industries' direction.
343 industries
343 industries
Halo 4 was created by 343 Industries.
To download Halo 3 Forger maps and custom game types, now that 343 Industries has taken over, you have to go through the sandbox.